A rep twice arranged to come back (8)
I believe the answer is:
reappear
'come back' is the definition.
(to reappear is to come back again)
'a rep twice arranged' is the wordplay.
I cannot quite see how this works, but
'a' is within the answer.
'rep' could be 'repp' (synonyms) and 'repp' is found within the remaining letters.
The remaining letters 'ear' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'to' is the link.
(Other definitions for reappear that I've seen before include "Show over" , "Turn up again" , "make a comeback" , "crop up again" , "spring up again?" .)